c++ - Video from 2 cameras (for Stereo Vision) using OpenCV, but one of them is lagging -

-

i'm trying create stereo vision using 2 logitech c310 webcams. result not enough. 1 of videos lagging compared other one.

here opencv program using vc++ 2010:

#include <opencv\cv.h> #include <opencv\highgui.h> #include <iostream>  using namespace cv; using namespace std;  int main() {     try     {         videocapture cap1;         videocapture cap2;          cap1.open(0);         cap1.set(cv_cap_prop_frame_width, 1040.0);         cap1.set(cv_cap_prop_frame_height, 920.0);          cap2.open(1);           cap2.set(cv_cap_prop_frame_width, 1040.0);         cap2.set(cv_cap_prop_frame_height, 920.0);         mat frame,frame1;          (;;)         {             mat frame;             cap1 >> frame;              mat frame1;             cap2 >> frame1;              transpose(frame, frame);             flip(frame, frame, 1);              transpose(frame1, frame1);             flip(frame1, frame1, 1);              imshow("img1", frame);             imshow("img2", frame1);              if (waitkey(1) == 'q')                 break;         }          cap1.release();         return 0;     }     catch (cv::exception & e)     {         cout << e.what() << endl;     } }

how can avoid lagging?

you're saturating usb bus.

try plug 1 in front, other in back(in hope land on different buses),

or reduce frame size / fps generate less traffic.


Comments

Post a Comment

Popular posts from this blog

python - Subclassed QStyledItemDelegate ignores Stylesheet -

-
i'm trying subclass qstyleditemdelegate remove focus rectangle in qcombobox . even though i'm calling base implementation of paint function , nothing else, result different. looks if parts of style-sheet influence bounding box of item taken consideration. class pstyleditemdelegate(qstyleditemdelegate): def __init__(self, *args, **kwds): super(pstyleditemdelegate, self).__init__(*args, **kwds) def paint(self, *args, **kwargs): qstyleditemdelegate.paint(*args, **kwargs) what have paint unmodified qstyleditemdelegate ? as suggested tried replacing pyside pyqt4 , works, appears bug. update pyside 1.1.2 1.2.1 result same. unfortunately switch breaks other parts of code, if there no other suggestions i'm going accept answer. edit bug tracked here
Read more

java - HttpClient 3.1 Connection pooling vs HttpClient 4.3.2 -

-
i have used httpclient3.1(java) connection pooling below : import org.apache.commons.httpclient.httpclient; import org.apache.commons.httpclient.multithreadedhttpconnectionmanager; import org.apache.commons.httpclient.params.httpclientparams; import org.apache.commons.httpclient.params.httpmethodparams; import org.apache.log4j.logger; public class httpclientmanager { private static logger logger = logger.getlogger(httpclientmanager.class); private static multithreadedhttpconnectionmanager connectionmanager = new multithreadedhttpconnectionmanager(); private static httpclientparams clientparams = new httpclientparams(); static { try { clientparams.makelenient(); clientparams.setauthenticationpreemptive(false); clientparams.setparameter(httpmethodparams.so_timeout, new integer(30000)); // set so_timeout clientparams.setparameter(httpmethodparams.head_body_check_timeout, new integer(3000)); // head responses ...
Read more

node.js - StackOverflow API not returning JSON -

-
i using node.js script gather data stackoverflow. know responses gzipped, put code in should take care of that. script follows: var request = require('request'); var zlib = require('zlib'); function getstackoverflowresponse(url, callback){ request(url, {encoding: null}, function(err, response, body){ if(response.headers['content-encoding'] == 'gzip'){ zlib.gunzip(body, function(err, dezipped) { callback(dezipped); }); } else { callback(body); } }); } var url = "https://api.stackexchange.com/docs/questions#pagesize=2&order=desc&min=2014-01-04&max=2014-02-02&sort=activity&tagged=apigee&filter=default&site=stackoverflow&run=true"; getstackoverflowresponse(url, function(questions) { console.log(questions); }); instead of getting json output, i'm getting following response: buffer 0d 0a 0d 0a 0d 0a 0d 0a 3c 21 44 4f 43 54 59 50 45 20 48...
Read more